markg, for me YES! I bought a IDX Pro for my wife, five years ago. I bought it new at a brick and mortar hobby store back at that time. My wife isn't really into metal detecting, so I am the only one who might put it to use. This last year I regained momentum on getting back into the hobby. I started benchmarking the IDX Pro against other machines I have. Initially I wasn't real impressed with the detector because I like manual GB and user adjustable audio.
I had read on a couple of the forums the popularity of the IDX Pro, and the praise of the Mr. Bill mods. I decided to give the IDX Pro another look see, to validate what other users saw in the unit. I went back to the benchmarking, and double checked all my previous observation/tests. I chanced that I would send it in for Mr Bill mods to see if that would help performance.
I got my IDX Pro-m back two weeks ago. I have been out on my test targets with it using the 4x6 DD Shooter, 350 BM, and the Pro 9.5 coil. Before sending in the unit for upgrades, the all metal mode, and pinpoint function had a high threshold tone while using headphones. The factory setting made this mode un-desirable for any thoughts of a All metal search mode. It was also quite annoying when trying to contour, or pinpoint in the triggered pinpoint mode/function. I have the Grey Ghost headphones, and while I could have turned down the headphone volume to be more palatable, I knew that it was too high, and small or deep targets, would be missed or over shadowed by the factory set threshold level.
Post mods' I now have the ability to ground balance, to my specific ground conditions. With a audio threshold I can use, and a manual GB control, I can be self assured of ground balance setup anywhere I might hunt. I have noticed an improved detection depth, whether it is through a more precise ground balancing, or Sensitivity tweaks made during the upgrade/mod, I am not sure. I had tested the detector before I planned to send it in - on my test targets. That was when the soil had a good moisture content. I am now testing post modifications, however in dry, hard soil and I do see a improvement in detector performance even though the soil environment condition is worse! After my bone dry and hard soil condition testing of a couple different detectors, I will water the area down so I can compare better the true performance increase. My observation is hard, dry soil inhibits good target detection.
The IDX Pro lacks a battery check function, the pre mod factory Audio Threshold was usable, but not desirable for me.. The addition of the Audio Threshold adjustment, and the manual GB adjustment installed by the Mr. Bill mods have gave me a more favorable liking to this detector. I know that I will be much happier with the IDX Pro-m than I would have been with the non-mod unit.
My 2 cents worth,
Square Nail